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Polymer inflation

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arxiv 1409.6218 v2 pith:XWIOUREP submitted 2014-09-22 astro-ph.CO gr-qchep-th

Syed Moeez Hassan , Viqar Husain , Sanjeev S. Seahra This is my paper · ORCID
classification astro-ph.COgr-qchep-th
keywords inflationpolymerdynamicsearlyfieldmethodmodelquantization
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We consider the semi-classical dynamics of a free massive scalar field in a homogeneous and isotropic cosmological spacetime. The scalar field is quantized using the polymer quantization method assuming that it is described by a gaussian coherent state. For quadratic potentials, the semi-classical equations of motion yield a universe that has an early "polymer inflation" phase which is generic and almost exactly de Sitter, followed by a epoch of slow-roll inflation. We compute polymer corrections to the slow roll formalism, and discuss the probability of inflation in this model using a physical Hamiltonian arising from time gauge fixing. We also show how in this model, it is possible to obtain a significant amount of slow-roll inflation from sub-Planckain initial data, hence circumventing some of the criticisms of standard scenarios. These results show the extent to which a quantum gravity motivated quantization method affects early universe dynamics.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. An effective Friedmann equation for a bouncing anisotropic universe

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Derives the effective Friedmann equation and the exact parabolic shear–density relation at the bounce for polymer Bianchi-I, with constants −4, 4, 0 in the sharply peaked limit.

  2. Polymer Bianchi-I with polymer matter

    gr-qc 2025-09 conditional novelty 5.0 of 10

    In a Bianchi-I universe with polymer quantization of both geometry and a massless scalar, the matter polymer scale shifts the quantum bounce and alters volume and anisotropy evolution.

  3. Polymer cosmology with polymer matter: Effective dynamics

    gr-qc 2025-02 conditional novelty 5.0 of 10

    A polymer-quantized scalar field on a polymer-quantized FLRW background produces a bounce whose location depends on the matter polymer scale, with generic asymmetric evolution across the bounce.

  4. Einstein@Home all-sky "bucket" search for continuous gravitational waves in LIGO O3 public data

    gr-qc 2025-08 unverdicted novelty 4.0 of 10

    A non-detection and upper limit for continuous gravitational waves is claimed, but the body text is an unrelated cosmology paper, making the result unverifiable.

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